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MOLECULAR-WEIGHT DEPENDENCE OF POSITRON LIFETIME PARAMETERS IN PEEK SAMPLES

被引：3
|
作者：
SUVEGH, K [1 ]
KLAPPER, M [1 ]
VERTES, A [1 ]
机构：
[1] MAX PLANCK INST POLYMER RES,W-6500 MAINZ,GERMANY
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1994年 / 186卷 / 05期
关键词：
D O I：
10.1007/BF02162621
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Positron lifetime measurements have been performed on differently manufactured PEEK samples of different molecular weights. Our measurements confirmed an old assumption: the o-Ps lifetime changes linearly with the molecular weight of the polymer. We have found that both the size of the free volumes and their number increase with increasing molecular weight of the investigated polymers.
引用
收藏
页码：375 / 384
页数：10
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